title: Radial keratotomy in the 1990s and the PERK Study.
authors.forename: P S
authors.initials: PS
authors.lastname: Binder
mesh_terms: D005500:Follow-Up Studies; D006801:Humans; D007646:Keratotomy, Radial / Q000706:statistics & numerical data; D009216:Myopia / Q000503:physiopathology / Q000601:surgery*; D010043:Outcome and Process Assessment, Health Care; D011183:Postoperative Complications; D011446:Prospective Studies; D014792:Visual Acuity